World health day is one of the health awareness days, was organized by, celebrated and started for first time in history by World Health Organization, whose short form is WHO on 7th April, 1950. Yes, first time celebration of world health day had occurred on 7th April, 1950. Since then this, tradition is continued, celebrated each year on 7th April by World Health Organization, by various hospitals, clinic government and different health organizations, nurses, doctors and by various health professionals. Almost, every body related to health profession celebrates it every year.